A published report says the suspected gunman in last month’s triple-murder at Maquoketa Caves State Park used a “ghost gun.” The report quotes the parents of Anthony Sherwin as saying the 23-year-old suspect from La Vista, Nebraska ordered parts for the untraceable weapon online and built it himself at home. Authorities say he used that gun to kill 42 year old Tyler Schmidt, 42 year old Sarah Schmidt, and their 6 year old daughter, Lula, all of Cedar Falls. The victims were in their tent at the park at the time. There is no known motive for the killings. Authorities say Sherwin later turned the weapon on himself and his body was found nearby.















